CN102986116B - Permanent magnetic baried type rotor and electric rotating machine - Google Patents
Permanent magnetic baried type rotor and electric rotating machine Download PDFInfo
- Publication number
- CN102986116B CN102986116B CN201180033938.8A CN201180033938A CN102986116B CN 102986116 B CN102986116 B CN 102986116B CN 201180033938 A CN201180033938 A CN 201180033938A CN 102986116 B CN102986116 B CN 102986116B
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- rotor core
- space
- permanent
- axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides permanent magnetic baried type rotor and electric rotating machine.Permanent magnetic baried type rotor possesses: rotor core, and it is applicable to the radially inner side being configured in fixture; First permanent magnet, it is embedded in the position of the close outer peripheral face of this rotor core, and extends on the direction orthogonal with d axle; And second permanent magnet, it is embedded in the circumferential both sides of this first permanent magnet, and extends along q axle.This permanent magnetic baried type rotor also possesses space, and this space is formed at this rotor core in the mode at the circumferential two ends leaving this first permanent magnet towards this second permanent magnet.This space has the radially inner side end being positioned at outermost radial outside end and being positioned at inner side in the radial direction of this rotor core.The magnetic pole strength of this first permanent magnet in the radial direction of rotor core between the radial outside end in this space and radially inner side end.
Description
Technical field
The present invention relates to permanent magnetic baried type rotor and possess the electric rotating machine of this permanent magnetic baried type rotor, wherein, permanent magnetic baried type rotor possesses: the first permanent magnet, and the position of this first permanent magnetic baried close outer peripheral face to rotor core also extends on the direction orthogonal with d axle; Second permanent magnet, this is second permanent magnetic baried to rotor core extending along q axle; And space, this space is formed at rotor core in the mode leaving the first permanent magnet towards the second permanent magnet.
Background technology
As shown in Figure 7, the permanent magnet style reluctance rotary motor 90 described in patent documentation 1 possesses: the fixture 92 possessing multiple armature coil 91; And be configured at the rotor 93 of radially inner side of this fixture 92.
Rotor 93 possesses columnar rotor core 94.Multiple magnetic pole is provided with at rotor core 94.On the direction of each magnetic pole shaft along rotor core 94, be formed with multipair rectangular first blank part 95 in the mode at the interval separating magnet pole widths.Each the position sandwiching each magnetic pole from circumferential both sides is formed in the first blank part 95.The first permanent magnet 96 has been imbedded respectively at the first blank part 95.In addition, between each magnetic pole, the periphery roughly along rotor core 94 is formed with rectangular second blank part 97.The second permanent magnet 98 has been imbedded respectively at the second blank part 97.
The first permanent magnet 96 and the second permanent magnet 98 that are arranged at rotor core 94 make reluctance torque increase.Thus, the moment of torsion of permanent magnet style reluctance rotary motor 90 is made to increase.
Patent documentation 1: Japanese Patent No. 3597821 publication
Because the second permanent magnet 98 is configured in the position of the close outer peripheral face of rotor core 94, so comparatively strong with the alternating magnetic field of this second permanent magnet 98 interlinkage, thus produce larger eddy current loss at the second permanent magnet 98.The eddy current loss larger because of this and cause the temperature of the second permanent magnet 98 to rise, thus produce and reduce from the magnetic line of force of the second permanent magnet 98.Therefore, the moment of torsion of permanent magnet style reluctance rotary motor 90 reduces.
As the countermeasure reducing eddy current loss, can enumerate adopt the magnet with high coercive force as the second permanent magnet 98, increase the second permanent magnet 98 thickness, the second permanent magnet 98 is divided into multiple etc. countermeasures, but which kind of countermeasure all can cause the cost of the second permanent magnet 98, therefore these countermeasures are not all preferred countermeasures.
In order to weaken the alternating magnetic field with the second permanent magnet 98 interlinkage, consider the second permanent magnet 98 is separated with the outer peripheral face of rotor core 94, as shown in the double dot dash line in Fig. 7, namely make the position (forming position of the second blank part 97) of imbedding of the second permanent magnet 98 move to the center of rotor core 94.But, if make the position of imbedding of the second permanent magnet 98 move to the center of rotor core 94, then because the second permanent magnet 98 and the first permanent magnet 96 close, so the short circuit magnetic line of force between the first permanent magnet 96 and the second permanent magnet 98 increases, thus reduce from the magnetic line of force of the second permanent magnet 98 by fixture 92.Therefore, the moment of torsion of permanent magnet style reluctance rotary motor 90 reduces.
Summary of the invention
The object of the present invention is to provide and a kind ofly can reduce eddy current loss and don't the permanent magnetic baried type rotor of moment of torsion can be reduced and possess the electric rotating machine of this permanent magnetic baried type rotor.
To achieve these goals, provide a kind of permanent magnetic baried type rotor in an embodiment of the invention, it possesses: rotor core, and it is applicable to the radially inner side being configured in fixture; First permanent magnet, it is embedded in the position of the close outer peripheral face of this rotor core, and extends on the direction orthogonal with d axle; And second permanent magnet, it is embedded in the circumferential both sides of this first permanent magnet, and extends along q axle.This permanent magnetic baried type rotor also possesses space, and above-mentioned space is formed at this rotor core in the mode at the circumferential two ends leaving this first permanent magnet towards this second permanent magnet.This space has the radially inner side end being positioned at outermost radial outside end and being positioned at inner side in the radial direction of this rotor core in the radial direction of this rotor core.The magnetic pole strength of this first permanent magnet in the radial direction of rotor core between the radial outside end in this space and radially inner side end.
Accompanying drawing explanation
Fig. 1 is the vertical view of the permanent magnetic baried type electric rotating machine illustrated based on the first execution mode of the present invention.
Fig. 2 is the partial enlarged drawing of the magnetic pole of the permanent magnetic baried type rotor of the permanent magnetic baried type electric rotating machine that Fig. 1 is shown.
Fig. 3 is the vertical view of the permanent magnetic baried type electric rotating machine illustrated based on the second execution mode of the present invention.
Fig. 4 is the partial enlarged drawing of the magnetic pole of the permanent magnetic baried type rotor of the permanent magnetic baried type electric rotating machine that Fig. 3 is shown.
Fig. 5 is the partial enlarged drawing of other example of the second permanent magnet of the permanent magnetic baried type electric rotating machine that Fig. 1 is shown.
Fig. 6 is the partial enlarged drawing of other example of the second permanent magnet of the permanent magnetic baried type electric rotating machine that Fig. 3 is shown.
Fig. 7 is the vertical view of the permanent magnet style reluctance rotary motor illustrated based on prior art.Embodiment
Below, composition graphs 1 ~ Fig. 2 is described the first execution mode of specific embodiments of the invention.
As shown in Figure 1, permanent magnetic baried type electric rotating machine M possesses the fixture 10 of ring-type and is arranged on permanent magnetic baried type below the rotor 15(in this fixture 10 in the mode that can rotate, and is denoted as rotor 15 simply).Fixture 10 possesses the stator core 11 of ring-type.The iron core plate that this stator core 11 is made by stacked multiple magnetics (steel plate) is formed.
Multiple tooth (teeth) 13 is arranged with in the inner peripheral portion of stator core 11.In addition, between the tooth 13 that the circumference along stator core 11 is adjacent, groove 12 is formed with.Coil 30 is assembled with respectively in groove 12.Herein, as shown in Figure 2, the length along the direction orthogonal with the radial direction of stator core 11 of tooth 13 is set to the width of tooth 13.By the intermediate point of the width by this tooth 13 and the straight line extended in the radial direction of stator core 11 is set to the central shaft TL of this tooth 13.In addition, the width between the central shaft TL of adjacent a pair tooth 13 is set to the spacing P between tooth 13.Width between the central shaft TL of above-mentioned tooth 13 tends to cardinal extremity and increases gradually along with the front end (radially inner side end) from tooth 13, therefore, in the present embodiment, the minimum value of the width between the central shaft TL at the front end place of a pair tooth 13, width namely between central shaft TL is set to spacing P.
Next, rotor 15 is described.As shown in Figure 1, rotor 15 possesses circular rotor core 16, and this rotor core 16 is the iron core plate 161 made by stacked multiple magnetics (steel plate) and is formed.Be provided with axis hole 16a the central part of rotor core 16 is through.Insert at this axis hole 16a and be fixed with the output shaft (omitting diagram) of permanent magnetic baried type electric rotating machine M.
The each imaginary area W obtained circumferentially rotor core 16 on average being split (being divided into eight parts in the present embodiment) has respectively imbedded first permanent magnet 17 and two the second permanent magnets 18.First permanent magnet 17 and the second permanent magnet 18 are respectively in writing board shape, and the cross section orthogonal with the central shaft C of rotor core 16 of the first permanent magnet 17 and the second permanent magnet 18 is formed as rectangular shape.
In each imaginary area W, the one group of group of magnets comprising first permanent magnet 17 and two the second permanent magnets 18 plays function as a magnetic pole.In the present embodiment, the circumference along rotor core 16 is equipped with group of magnets in 8 positions, place, and rotor 15 possesses 8 magnetic poles.In addition, the circumference that multiple magnetic pole is arranged in rotor core 16 alternately becomes heteropole.In addition, d axle 26 shown in Fig. 1 represents the direction (orthogonal with the long side direction of the first permanent magnet 17 and by the direction between two the second permanent magnets 18) of the magnetic line of force that a magnetic pole produces, q axle 27 represents the axle all orthogonal in electric field and magnetic field with d axle 26, and extends into arc-shaped.
As shown in Figure 2, in each imaginary area W, be formed with first in the position of the close outer peripheral face 16b of rotor core 16 and imbed hole 19.First imbeds hole 19 by through for rotor core 16 on the direction that the central shaft C with rotor core 16 is parallel, and circumference elongated (rectangular shape) roughly along rotor core 16 extend.Specifically, first to imbed the long limit in hole 19 orthogonal with d axle 26.First imbed hole 19 at this and be embedded with the first permanent magnet 17.
Form the first face, i.e. forming surface imbedding hole 19 to comprise: the outside forming surface 19a as long side forming surface close with the outer peripheral face 16b of rotor core 16; And opposed with forming surface 19a outside this and close with the inner peripheral surface of the rotor core 16 inner side forming surface 19b as long side forming surface.Be embedded in the first the first permanent magnet 17 imbedding hole 19 to have: magnetic pole strength 17a, this magnetic pole strength 17a are the end faces close with the outer peripheral face 16b of rotor core 16, that is the face opposed with outside forming surface 19a; And anti-magnetic pole strength 17b, this anti-magnetic pole strength 17b is the end face close with the inner peripheral surface of rotor core 16, that is the face opposed with inner side forming surface 19b.And then the first permanent magnet 17 has the magnet end face 17c of the end face as two short brinks.
Be formed with second of a pair rectangular shaped at each imaginary area W and imbed hole 20.Each second imbeds hole 20 by through for rotor core 16 on the direction parallel with central shaft C, and each second long limit imbedding hole 20 extends from the radially inner side of rotor core 16 towards radial outside.More specifically, respectively imbed to second the V shape that hole 20 is configured to along with being separated from each other from the radially inner side of rotor core 16 trend radial outside.Each to the second long limit imbedding hole 20 relative to the q axle 27 near it a part abreast (along) extend.Imbed hole 20 each second and be embedded with the second permanent magnet 18.Form each second face, i.e. forming surface imbedding hole 20 to comprise: imbed close the first forming surface 20a as long side forming surface in hole 19 with first; And it is opposed with this first forming surface 20a and imbed close the second forming surface 20b as long side forming surface in hole 20 with second of adjacent magnetic pole.
Each homopolarity is formed as to the end that the second permanent magnet 18 is configured to homonymy (such as, the outer peripheral face 16b side of rotor core 16).In addition, the end that the second permanent magnet 18 being configured at adjacent magnetic pole is configured to homonymy is each other formed as heteropole.Such as, when certain magnetic pole, the end of the outer peripheral face 16b side of a pair second permanent magnets 18 be S pole, adjacent magnetic pole, the end of the outer peripheral face 16b side of a pair second permanent magnets 18 is N pole.In the present embodiment, a pair second permanent magnets 18 are configured in the position relative to d axle 26 line symmetry, can rotate towards positive and negative both direction to make rotor 15.
At rotor core 16 to be formed with each a pair first spaces 21 with the first two minor face continuous print modes imbedding hole 19.In addition, each a pair Second gap 22 being different from the almost fan shape in the first space 21 is formed at rotor core 16 in the mode leaving the first permanent magnet 17 towards the second permanent magnet 18.First space 21 and Second gap 22 respectively on the direction parallel with central shaft C by through for rotor core 16.In the present embodiment, the first space 21 near each end being positioned at the first permanent magnet 17 and Second gap 22 form a space part 23.
A pair first spaces 21 with along with being separated from the first permanent magnet 17 of correspondence to the second permanent magnet 18 side gradually the mode of constriction be formed at the end face of two minor faces of the first permanent magnet 17 respectively.Form the face in the first space 21, the i.e. forming surface in the first space 21 to comprise: the outside forming surface 19a that the first forming surface 21a, this first forming surface 21a and first imbed hole 19 extends to the inner side of rotor core 16 continuously; And the second forming surface 21b, this second forming surface 21b extends from magnet end face 17c to the inner side of rotor core 16.
The face, the i.e. forming surface of Second gap 22 that form Second gap 22 comprise: outer circumferential side forming surface 22a, and this outer circumferential side forming surface 22a extends into arc-shaped along the outer peripheral face 16b of rotor core 16; D axle side forming surface 22b, this d axle side forming surface 22b extend from the ora terminalis near the first permanent magnet 17 two ora terminalis of this outer circumferential side forming surface 22a; And q axle side forming surface 22c, this q axle side forming surface 22c extend from another ora terminalis two ora terminalis of above-mentioned this outer circumferential side forming surface 22a.D axle side forming surface 22b and q axle side forming surface 22c is close to each other along with the position trend inner peripheral surface of the close outer peripheral face 16b from rotor core 16.The intersection point of d axle side forming surface 22b and q axle side forming surface 22c is the radially inner side end Y being positioned at inner side in the radial direction of rotor core 16 in Second gap 22.In addition, in the present embodiment, the outer circumferential side forming surface 22a of Second gap 22 is equivalent in the radial direction of rotor core 16, be positioned at outermost radial outside end in Second gap 22.
Between the outer peripheral face 16b and the outer circumferential side forming surface 22a of Second gap 22 of rotor core 16, be formed with outer circumferential side bridge 24, this outer circumferential side bridge 24 extends along the circumference of rotor core 16 with constant width.Namely, the side of Second gap 22 side of outer circumferential side bridge 24 is outer circumferential side forming surface 22a of Second gap 22.
Be formed between the first space 21 and Second gap 22 strengthen bridge 25 at rotor core 16.That is, the side strengthening the first side, space 21 of bridge 25 is the first forming surface 21a in the first space 21, and the side strengthening Second gap 22 side of bridge 25 is the d axle side forming surface 22b of Second gap 22.Strengthen bridge 25 to extend with the constant width roughly the same with the width of outer circumferential side bridge 24.The width of outer circumferential side bridge 24 and reinforcement bridge 25 is preferably more than the twice of the thickness of iron core plate 161.
The magnetic pole strength 17a of the first permanent magnet 17 is configured to be positioned at the outer circumferential side forming surface 22a(radial outside end than Second gap 22) more lean on the position of the radially inner side of rotor core 16 and be positioned at the position more leaning on the radial outside of rotor core 16 than the radially inner side end Y of Second gap 22.Namely, the magnetic pole strength 17a of the first permanent magnet 17 is positioned at the outer circumferential side forming surface 22a(radial outside end of Second gap 22 in the radial direction of rotor core 16) and radially inner side end Y between.Herein, by the outer peripheral face 16b to magnetic pole strength 17a from rotor core 16, the burial depth F that is set to the first permanent magnet 17 along the distance of d axle 26.If with the spacing P between tooth 13 for benchmark, then burial depth F is preferably (1/10) × P < F < (2/3) × P.
Two the second permanent magnets 18 are so that along with the trend inner peripheral surface of rotor core 16, the mode at constriction interval to each other configures.Therefore, if the first permanent magnet 17 is close to the inner peripheral surface of rotor core 16, then the magnet end face 17c of the first permanent magnet 17 is close to the second permanent magnet 18.If the first permanent magnet 17 reaches burial depth F close to the degree of the inner peripheral surface of rotor core 16 be greater than 2/3P, then the short circuit magnetic line of force between the first permanent magnet 17 and the second permanent magnet 18 can be caused to increase, thus be not preferred.On the other hand, if the first permanent magnet 17 reaches burial depth F close to the degree of the outer peripheral face 16b of rotor core 16 be less than 1/10P, then can cause strengthening with the alternating magnetic field of the first permanent magnet 17 interlinkage, the eddy current loss on the surface of the first permanent magnet 17 increases, thus is not preferred.Burial depth F is set in and makes in the scope of the first permanent magnet 17 in the radial direction of rotor core 16 between a pair Second gap 22.
Preferably, the length N on the long side direction of the first permanent magnet 17 is in the scope of 1 times ~ 3 times of the spacing P between tooth 13.If length N is less than spacing P, then the first permanent magnet 17 becomes miniaturized and magnetic force is reduced, and causes producing and reduces from the magnetic line of force of the first permanent magnet 17, thus be not preferred.On the other hand, if the length N of the first permanent magnet 17 is greater than 3 times of spacing P, then the first permanent magnet 17 becomes long, thus is difficult to Second gap 22(space part 23) and the second permanent magnet 18 be suitably configured at magnetic pole, thus be not preferred.
In addition, preferably, in each magnetic pole, each Second gap 22(space part 23) and second permanent magnet 18 adjacent with this Second gap 22 between the q axle side forming surface 22c and second of interval H(Second gap 22 imbed hole 20 long side forming surface 20a between interval) be in the scope of 0.3 times ~ 2 times of spacing P.If this interval H is less than 0.3 times of spacing P, then by the second permanent magnet 18 and space part 23(Second gap 22) between the magnetic line of force reduce, cause the moment of torsion of permanent magnetic baried type electric rotating machine M to reduce, thus be not preferred.On the other hand, if interval H is greater than 2 times of spacing P, although can make by the second permanent magnet 18 and space part 23(Second gap 22) between the magnetic line of force increase, torque ripple can be caused to strengthen, thus be not preferred.
Next, the effect of the permanent magnetic baried type electric rotating machine M possessing rotor 15 is described.
Rotating magnetic field is produced at fixture 10 by being energized to coil 30.Magnetic attraction between this rotating magnetic field and the first permanent magnet 17 and the second permanent magnet 18 and magnetic repulsion make rotor 15 rotate.Now, because be provided with the first permanent magnet 17 and the second permanent magnet 18 at rotor core 16, so such as be only provided with the first permanent magnet 17 at rotor core 16 compared with the situation of the side in the second permanent magnet 18, reluctance torque increases, thus the moment of torsion of permanent magnetic baried type electric rotating machine M is increased.
At rotor core 16, the first permanent magnet 17 is embedded in rotor core 16, makes the burial depth F of the first permanent magnet 17 meet (1/10) × P < F < (2/3) × P.Therefore, the first permanent magnet 17 be configured in unduly close to rotor core 16 outer peripheral face 16b and unduly close to the position of inner peripheral surface.In it is possible to the generation of eddy current loss on surface of suppression first permanent magnet 17, and the short circuit magnetic line of force between the first permanent magnet 17 and the second permanent magnet 18 can be reduced.
According to above-mentioned execution mode, following advantage can be obtained.
(1) rotor 15 rotor core 16 and be configured with the first permanent magnet 17 slenderly extended in the position of the close outer peripheral face 16b of rotor core 16.In addition, two the second permanent magnets 18 are configured at rotor core 16 across the first permanent magnet 17.First permanent magnet 17 with the magnetic pole strength 17a of outer peripheral face 16b side be positioned at than the outer peripheral face 16b side of Second gap 22 outer circumferential side forming surface 22a more by the radially inner side of rotor core 16 position and be positioned at and be more embedded in rotor core 16 by the mode of position of the radial outside of rotor core 16 than the radially inner side end Y of Second gap 22.Position is imbedded by what set the first permanent magnet 17 in like fashion, even if the first permanent magnet 17 to be configured in the position of the close outer peripheral face 16b of rotor core 16, also can prevent the first permanent magnet 17 excessively close to the situation of outer peripheral face 16b, thus the generation of the eddy current loss on the surface of the first permanent magnet 17 can be suppressed.And then, the first permanent magnet 17 can also be prevented excessively close to the situation of the inner peripheral surface of rotor core 16, thus reduce the short circuit magnetic line of force between the first permanent magnet 17 and the second permanent magnet 18.
Suppress for less therefore, it is possible to the temperature of the first permanent magnet 17 caused because of eddy current loss is risen, and the increase of the minimizing of the magnetic line of force of the first permanent magnet 17 and the above-mentioned short circuit magnetic line of force can be prevented.Its result, can prevent the moment of torsion of permanent magnetic baried type electric rotating machine M from reducing.Because the eddy current loss of the first permanent magnet 17 can be suppressed, thus without the need to adopt the magnet of high coercive force as the first permanent magnet 17, increase the first permanent magnet 17 thickness or the first permanent magnet 17 is divided into many parts.Therefore, it is possible to avoid the situation making the cost of the first permanent magnet 17 in order to prevent moment of torsion from reducing.
(2) because the burial depth F of the first permanent magnet 17 is set as meeting (1/10) × P < F < (2/3) × P, so eddy current loss can be reduced and don't make the moment of torsion of permanent magnetic baried type electric rotating machine M reduce.
(3) the length N on the long side direction of preferably, the first permanent magnet 17 is in the scope of 1 times ~ 3 times of the spacing P between tooth 13.By setting the scope of the length N of the first permanent magnet 17 in like fashion, can prevent from causing because the first permanent magnet 17 is too short producing reducing from the magnetic line of force of the first permanent magnet 17, and can suitably configure Second gap 22(space part 23 in magnetic pole) and the second permanent magnet 18.
(4) the interval H preferably, between Second gap 22 and the second adjacent permanent magnet 18 is in the scope of 0.3 times ~ 2 times of spacing P.By setting interval H in like fashion, the moment of torsion of permanent magnetic baried type electric rotating machine M can be suppressed to reduce, and the enhancing of torque ripple can be suppressed.
(5) in each magnetic pole, two the second permanent magnets 18 are configured to the V shape expanded from the radially inner side of rotor core 16 towards radial outside across first permanent magnet 17.Therefore, it is possible to make to be increased by the magnetic line of force of the q axle 27 of each magnetic pole, reluctance torque can be made to increase.
(6) two magnet end face 17c of the first permanent magnet 17 are provided with the first space 21, between the first permanent magnet 17 and the second permanent magnet 18, are configured with Second gap 22.Therefore, space part 23(first space 21 and Second gap 22 is utilized) the short circuit magnetic line of force between the first permanent magnet 17 and the second permanent magnet 18 can be reduced.
(7) by by outer circumferential side bridge 24 and more than 2 times of strengthening that the width of bridge 25 is set in the thickness of iron core plate 161, intensity during iron core plate 161 die-cut can be guaranteed.Therefore, it is possible to prevent the forming part of outer circumferential side bridge 24 and reinforcement bridge 25 from producing distortion when die-cut.
Below, composition graphs 3 ~ Fig. 4 is described the second execution mode of specific embodiments of the invention.Also description is omitted to mark identical Reference numeral to the part identical with the first execution mode.
As shown in Figure 3, the forming surface in the first space 21 comprises: outer circumferential side forming surface 21g, and this outer circumferential side forming surface 21g extends into arc-shaped along the outer peripheral face 16b of rotor core 16; And d axle side forming surface 21h, this d axle side forming surface 21h extend from the week ora terminalis to the inside near the first permanent magnet 17 two ora terminalis of this outer circumferential side forming surface 21g abreast relative to d axle 26.In addition, the forming surface in the first space 21 also comprises: forming surface 21c, and this forming surface 21c extends relative to magnetic pole strength 17a from the radially inner side ora terminalis of d axle side forming surface 21h abreast towards the second permanent magnet 18; And from the elongated surfaces 21d that ora terminalis and the d axle 26 of this forming surface 21c extend abreast.And then the forming surface in the first space 21 also comprises: q axle side forming surface 21e, this q axle side forming surface 21e extends from the ora terminalis near the second permanent magnet 18 of outer circumferential side forming surface 21g towards the radially inner side of rotor core 16; And inner circumferential side forming surface 21f, this inner circumferential side forming surface 21f extend from the ora terminalis of q axle side forming surface 21e towards the magnet end face 17c of the first permanent magnet 17.The forming surface in the first space 21 comprises outer circumferential side forming surface 21g, d axle side forming surface 21h, forming surface 21c, elongated surfaces 21d, q axle side forming surface 21e and inner circumferential side forming surface 21f.
The forming surface of Second gap 22 comprises: outer circumferential side forming surface 22a, and this outer circumferential side forming surface 22a extends into arc-shaped along the outer peripheral face 16b of rotor core 16; Extend abreast with q axle side forming surface 21e the ora terminalis of d axle side forming surface 22b, this d axle side forming surface 22b close first permanent magnet 17 in two ora terminalis of this outer circumferential side forming surface 22a; And q axle side forming surface 22c, this q axle side forming surface 22c extend from the ora terminalis near the second permanent magnet 18 of outer circumferential side forming surface 22a along q axle 27.
The side strengthening the first side, space 21 of bridge 25 is the q axle side forming surface 21e in the first space 21, and the side strengthening Second gap 22 side of bridge 25 is the d axle side forming surface 22b of Second gap 22.Be interposed between in the length range strengthening bridge 25 constant between strengthening between width, i.e. the q axle side forming surface 21e of bridge 25 and d axle side forming surface 22b.Preferably, the width strengthening bridge 25 is more than the twice of the thickness of iron core plate 161.At each imaginary area W(magnetic pole) and be formed with a pair reinforcement bridge 25 in two magnet end face 17c sides of the first permanent magnet 17.Strengthen the shape of falling V that bridge 25 is configured to expand from the outer peripheral face 16b side of rotor core 16 towards radially inner side interval to each other for this pair.
Between the outer peripheral face 16b and the outer circumferential side forming surface 21g in the first space 21 and outer circumferential side forming surface 22a of Second gap 22 of rotor core 16, be formed with the outer circumferential side bridge 24 that the circumference along rotor core 16 extends with constant width.Preferably, the width of outer circumferential side bridge 24 is more than the twice of the thickness of iron core plate 161.
First space 21 more extends towards radial outside compared with the magnetic pole strength 17a of the first permanent magnet 17, and more extends towards the second permanent magnet 18 side compared with magnet end face 17c.Herein, if the thickness along d axle 26 of the first permanent magnet 17 is set to T, the beeline along the direction orthogonal with d axle 26 from magnet end face 17c to q axle side forming surface 21e is set to V, then the first space 21 is formed as satisfied (1/3) × T < V≤T.
If beeline V is less than 1/3T, then the magnetic pole strength 17a of the first permanent magnet 17 is close with reinforcement bridge 25, is shortened, cause the magnetic resistance on this magnetic line of force path to reduce, thus be not preferred from magnetic pole strength 17a by the magnetic line of force path strengthening bridge 25.In addition, the A/F constriction in the first space 21, causes increasing to the magnetic line of force strengthening bridge 25 short circuit from magnet end face 17c, thus is not preferred.On the other hand, if beeline V is greater than the thickness T of the first permanent magnet 17, then the first space 21 becomes excessive, is difficult to the first space 21 and Second gap 22 to be suitably configured at magnetic pole, thus is not preferred.
When by the first space 21 by elongated surfaces 21d and magnet end face 17c and when being set to imaginary line E with the straight line that d axle 26 extends abreast, the first space 21 comprises: the base portion 211 more by the second permanent magnet 18 side compared with imaginary line E; And the extension 212 extended to the inside in week more towards the first permanent magnet 17 compared with imaginary line E.Base portion 211 is positioned at the position closer to the second permanent magnet 18 compared with the first permanent magnet 17, and extension 212 is from base portion 211 extending to the inside towards the first permanent magnet 17 in week.
This extension 212 is formed as comprising compared with imaginary line E more by a part, the d axle side forming surface 21h and forming surface 21c of the week outer circumferential side forming surface 21g to the inside of the first permanent magnet 17.The A/F of the radial direction along rotor core 16 of extension 212 is less than the A/F of the radial direction along rotor core 16 of base portion 211.So the magnetic line of force is difficult to by base portion 211, but easily through the narrower extension 212 of A/F.Therefore, in the first space 21, the magnetic resistance of extension 212 is less than the magnetic resistance of base portion 211.
In the first space 21, inner circumferential side forming surface 21f is equivalent to be positioned at the radially inner side end of inner side in the radial direction of rotor core 16, and outer circumferential side forming surface 21g is equivalent in the radial direction of rotor core 16, be positioned at outermost radial outside end.
The magnetic pole strength 17a of the first permanent magnet 17 is configured to, be positioned at the outer circumferential side forming surface 21g(radial outside end than the first space 21) more by the position of the radially inner side of rotor core 16, and be positioned at the position more leaning on the outer peripheral face of rotor core 16 than the inner circumferential side forming surface 21f in the first space 21.Namely, the magnetic pole strength 17a of the first permanent magnet 17 is positioned at the outer circumferential side forming surface 21g(radial outside end in the first space 21 in the radial direction of rotor core 16) and inner circumferential side forming surface 21f between.Herein, the distance along d axle 26 from the outer peripheral face 16b of rotor core 16 to magnetic pole strength 17a is set to the burial depth F of the first permanent magnet 17.If with the spacing P between tooth 13 for benchmark, then burial depth is preferably (1/10) × P < F < (2/3) × P.Burial depth F is set as make the first permanent magnet 17 be positioned at a pair Second gap 22(space part 23) between scope.
Although the centrifugal force produced by the rotation because of rotor 15 and make towards the masterpiece of the outer peripheral face 16b side of rotor core 16 for the first permanent magnet 17, the reinforcement bridge 25 with mechanical strength can be utilized to prevent the first permanent magnet 17 from moving.
In addition, because of result from fixture 10 rotating magnetic field and between the magnetic line of force caused and the outer peripheral face 16b concentrating on magnet end face 17c and rotor core 16 from the magnetic line of force of the magnetic pole strength 17a of the first permanent magnet 17.The turn on angle of coil 30 is increased and produce magnetic saturation state between the first space 21 and the outer peripheral face 16b of rotor core 16.Now, the beeline V in the first space 21 is set in prescribed limit, makes reinforcement bridge 25 and magnet end face 17c extractor gauge set a distance, thus make to lengthen to the magnetic line of force path strengthening bridge 25 from magnetic pole strength 17a, and magnetic resistance is increased.Therefore, reduce from magnetic pole strength 17a towards the short circuit magnetic line of force strengthening bridge 25 flowing.
According to above-mentioned second execution mode, except advantage (2) ~ (5) of the first execution mode, (7), following advantage can also be obtained.
(1) with the thickness T of the first permanent magnet 17 for benchmark, the beeline V along the direction orthogonal with d axle 26 of the q axle side forming surface 21e from the magnet end face 17c of the first permanent magnet 17 to the first space 21 meets (1/3) × T < V≤T.Thus, space part 23 is formed to strengthen the mode of bridge 25 and magnet end face 17c extractor gauge set a distance.Therefore, it is possible to make to be increased from magnetic pole strength 17a by reinforcement bridge 25 and then the magnetic resistance arrived the outer peripheral face 16b of rotor core 16 or the magnetic line of force path of anti-magnetic pole strength 17b, the short circuit magnetic line of force via strengthening bridge 25 can be made to reduce.Its result, can not change the width of reinforcement bridge 25, namely maintain its mechanical strength, and the short circuit magnetic line of force via strengthening bridge 25 is reduced, thus can prevent the moment of torsion of permanent magnetic baried type electric rotating machine M from reducing.
(2) in each magnetic pole, what be positioned at two magnet end face 17c sides of the first permanent magnet 17 strengthens the shape of falling V that bridge 25 is configured to expand from the outer peripheral face 16b side of rotor core 16 towards radially inner side interval to each other for a pair.Therefore, the distance from magnet end face 17c to the q axle side forming surface 21e of the side as reinforcement bridge 25 increases from outer peripheral face 16b side gradually towards radially inner side.So along with from outer peripheral face 16b side towards radially inner side, the magnetic resistance produced because of the first space 21 increases, thus reducing towards the short circuit magnetic line of force strengthening bridge 25 via the first space 21 can be made.
The outer peripheral face 16b that (3) first spaces 21 are formed as from the magnetic pole strength 17a of the first permanent magnet 17 to rotor core 16 extends, and then, strengthen bridge 25 and magnet end face 17c extractor gauge set a distance.Therefore, the magnetic line of force from magnetic pole strength 17a moved towards the outer peripheral face 16b effluent of rotor core 16 before flowing in reinforcement bridge 25 in the first space 21.So except guaranteeing except beeline V, the magnetic resistance that arrival can also be made to strengthen on the magnetic line of force path of bridge 25 increases, thus the short circuit magnetic line of force via strengthening bridge 25 can be made to reduce further.
(4) first spaces 21 comprise base portion 211 and extension 212, and the A/F of the radial direction along rotor core 16 of extension 212 is less than the A/F of the radial direction along rotor core 16 of base portion 211.Therefore, compared with base portion 211, the magnetic line of force is more easily by extension 212, and the magnetic resistance of extension 212 reduces.So, in rotor core 16, make magnetic resistance reduce gradually along with the circumference central authorities towards the first permanent magnet 17 because of base portion 211 and extension 212.Therefore, compared with not being formed with the situation of extension 212, the change of the magnetic resistance of the rotor core 16 when rotor 15 rotates is comparatively gentle, can suppress the torque ripple of permanent magnetic baried type electric rotating machine M.
The magnetic pole strength 17a of the outer peripheral face 16b side of (5) first permanent magnets 17 is positioned at the position more leaning on the radially inner side of rotor core 16 than the outer circumferential side forming surface 21g of the outer peripheral face 16b side in the first space 21, and is positioned at the position more leaning on the outer peripheral face of rotor core 16 than the inner circumferential side forming surface 21f in the first space 21.By configuring the first permanent magnet 17 in like fashion, even if the first permanent magnet 17 to be configured in the position of the close outer peripheral face 16b of rotor core 16, also can prevent the first permanent magnet 17 excessively close to the situation of outer peripheral face 16b, thus the generation of the eddy current loss on the surface of the first permanent magnet 17 can be suppressed.And then, the first permanent magnet 17 can also be prevented excessively close to the situation of the inner peripheral surface of rotor core 16, thus the short circuit magnetic line of force between the first permanent magnet 17 and the second permanent magnet 18 can be reduced.
In addition, also can change as follows above-mentioned execution mode.
Respectively as shown in Figures 5 and 6, can make to be formed at rotor core 16 second imbeds hole 20 is formed as extending and the arc-shaped caved in from the radial outside of rotor core 16 towards radially inner side along q axle 27, and utilizes cross section to be that a permanent magnet of arc-shaped is formed and is embedded into the second permanent magnet 18 that second imbeds hole 20.
In the first and the second embodiments, be formed with a pair second at each imaginary area W of rotor core 16 and imbed hole 20, and imbed hole 20 each second and be embedded with the second permanent magnet 18.Aforesaid way can be replaced and formed at rotor core 16 and present second of the V shape be connected and imbed hole 20, and the second permanent magnet 18 of V shape being embedded into this and second imbedding hole 20.Second permanent magnet 18 of this V shape can be integrated second permanent magnet 18, also can be one group of second permanent magnet 18 being divided into multiple part.
Although make Second gap 22 be formed as almost fan shape in the first embodiment, the shape of Second gap 22 also suitably can be changed.
In the first and the second embodiments, the first permanent magnet 17 and a pair second permanent magnets 18 are configured to symmetrical relative to d axle 26 line, can rotate towards positive and negative both direction to make permanent magnetic baried type rotor 15.But, when permanent magnetic baried type rotor 15 only rotates towards a direction, also can not the first permanent magnet 17 and two the second permanent magnets 18 be configured to symmetrical relative to d axle 26 line.
Although in the first and the second embodiments number of magnetic poles is set to eight, also number of magnetic poles can be changed.
In this second embodiment, a pair is strengthened the shape of falling V that bridge 25 is configured to expand from the outer peripheral face 16b side of rotor core 16 towards radially inner side interval to each other.Also can replace this mode and a pair be strengthened the V shape that bridge 25 is configured to reduce from the outer peripheral face 16b side of rotor core 16 towards radially inner side the interval strengthened between bridge 25.In addition, the alternate constant that bridge 25 can be configured to strengthen between bridge 25 for this pair is strengthened for a pair.
In this second embodiment, the width of outer circumferential side bridge 24 and reinforcement bridge 25 can be below the twice of the thickness of iron core plate 161.
In this second embodiment, the extension 212 in the first space 21 can be formed as along with the constriction gradually from base portion 211 towards d axle 26.In this case, the A/F of the radial direction along rotor core 16 of extension 212 is along with the constriction gradually from base portion 211 towards d axle 26.Therefore, the magnetic resistance of rotor core 16 reduces towards d axle 26 gradually along with from base portion 211, therefore, it is possible to make the change of the magnetic resistance of rotor core 16 gentler, thus can suppress torque ripple.
Claims (15)
1. a permanent magnetic baried type rotor, is characterized in that, possesses:
Rotor core, it is applicable to the radially inner side being configured in fixture;
First permanent magnet, it is embedded in the position of the close outer peripheral face of described rotor core, and extends on the direction orthogonal with d axle;
Second permanent magnet, it is embedded in the circumferential both sides of described first permanent magnet, and extends along q axle; And
Space, it is formed at described rotor core in the mode at the circumferential two ends leaving described first permanent magnet towards described second permanent magnet,
In the radial direction of described rotor core, described space has the radially inner side end being positioned at outermost radial outside end and being positioned at inner side,
The magnetic pole strength of described first permanent magnet in the radial direction of rotor core between the radial outside end in described space and radially inner side end,
Described space is formed as the magnetic line of force is passed through between described second permanent magnet and described space,
Described fixture possesses the stator core of ring-type and is arranged in multiple teeth of inner peripheral portion of this stator core,
When extending in the radial direction of described stator core and be set to the central shaft of described tooth by the straight line of the intermediate point on the Width of described tooth, width between the described central shaft of a pair adjacent tooth is set to spacing P, when the distance along described d axle from the outer peripheral face of described rotor core to described magnetic pole strength is set to F, the first permanent magnet configuration becomes to meet (1/10) × P < F < (2/3) × P.
2. permanent magnetic baried type rotor according to claim 1, is characterized in that,
Described first permanent magnet is formed as the writing board shape slenderly extended on the direction orthogonal with described d axle, and the length on the long side direction of described first permanent magnet is in the scope of 1 times ~ 3 times of described spacing P.
3. permanent magnetic baried type rotor according to claim 1, is characterized in that,
Interval between described second permanent magnet and described space is in the scope of 0.3 times ~ 2 times of described spacing P.
4. permanent magnetic baried type rotor according to claim 1, is characterized in that,
Described second permanent magnet configuration is the V shape expanded from the radially inner side of described rotor core towards radial outside or the arc-shaped caved in from the radial outside of rotor core towards radially inner side.
5. an electric rotating machine, is characterized in that,
Described electric rotating machine possesses fixture and the permanent magnetic baried type rotor according to any one of claim 1 ~ claim 4.
6. a permanent magnetic baried type rotor, is characterized in that, possesses:
Rotor core, it is applicable to the radially inner side being configured in fixture;
First imbeds hole, and it is formed at the position of the close outer peripheral face of described rotor core, and extends on the direction orthogonal with d axle;
First permanent magnet, it is embedded in this and first imbeds hole;
Second imbeds hole, and it is formed on described rotor core in the circumferential both sides of described first permanent magnet, and extends along q axle;
Second permanent magnet, it is embedded in this and second imbeds hole;
Space part, it is imbedded between hole and described each second permanent magnet described first respectively and is formed at described rotor core, and this space part comprises: imbed hole continuously and the first space extended towards this second permanent magnet from each end face of circumference of described first permanent magnet with described first; And the Second gap in this first space is left towards described second permanent magnet; And
Strengthen bridge, it is formed between described first space and Second gap,
Described first space has the radially inner side end being positioned at outermost radial outside end and being positioned at inner side in the radial direction of described rotor core, the magnetic pole strength of described first permanent magnet in the radial direction of rotor core between the radial outside end in described first space and radially inner side end
Described Second gap is formed as the magnetic line of force is passed through between described second permanent magnet and described Second gap,
The shape of falling V expanding the interval strengthened between bridge from the radial outside of described rotor core towards radially inner side is formed as at a pair reinforcement bridge of the circumferential both sides of described first permanent magnet,
Described fixture possesses the stator core of ring-type and is arranged in multiple teeth of inner peripheral portion of this stator core,
When extending in the radial direction of described stator core and be set to the central shaft of described tooth by the straight line of the intermediate point on the Width of described tooth, width between the described central shaft of a pair adjacent tooth is set to spacing P, when the distance along described d axle from the outer peripheral face of described rotor core to described magnetic pole strength is set to F, the first permanent magnet configuration becomes to meet (1/10) × P < F < (2/3) × P.
7. permanent magnetic baried type rotor according to claim 6, is characterized in that,
When the thickness along described d axle of described first permanent magnet is set to T, when beeline from each end face of described first permanent magnet to the forming surface of the described reinforcement bridge in described first space is set to V, described space part is configured to meet (1/3) × T < V≤T.
8. permanent magnetic baried type rotor according to claim 6, is characterized in that,
Described rotor core is formed by the iron core plate of multiple magnetic systems stacked, and the distance between the forming surface of the described reinforcement bridge in the forming surface of the described reinforcement bridge in described first space and described Second gap is more than the twice of the thickness of described iron core plate.
9. permanent magnetic baried type rotor according to claim 8, is characterized in that,
Described first space and Second gap possess the outer circumferential side forming surface that the outer peripheral face along described rotor core extends respectively, between this outer circumferential side forming surface and outer peripheral face of described rotor core, be formed with the outer circumferential side bridge that the circumference along rotor core extends, the distance between described outer circumferential side forming surface and the outer peripheral face of described rotor core is more than the twice of the thickness of described iron core plate.
10. permanent magnetic baried type rotor according to claim 6, is characterized in that,
Described first permanent magnet is formed as the writing board shape slenderly extended on the direction orthogonal with described d axle, and the length on the long side direction of described first permanent magnet is in the scope of 1 times ~ 3 times of described spacing P.
11. permanent magnetic baried type rotors according to claim 6, is characterized in that,
Interval between described second permanent magnet and described Second gap is in the scope of 0.3 times ~ 2 times of described spacing P.
12. permanent magnetic baried type rotors according to claim 6, is characterized in that,
Described second permanent magnet configuration is the V shape expanded from the radially inner side of described rotor core towards radial outside or the arc-shaped caved in from the radial outside of rotor core towards radially inner side.
13. permanent magnetic baried type rotors according to claim 6, is characterized in that,
Described first space comprises: the base portion between described first permanent magnet and the second permanent magnet; And from this base portion towards the extension extended to the inside in week of described first permanent magnet, about the size of the radial direction along described rotor core, the A/F of described extension is less than the A/F of described base portion.
14. 1 kinds of electric rotating machines, is characterized in that,
Described electric rotating machine possesses fixture and the permanent magnetic baried type rotor according to any one of claim 6 ~ claim 13.
15. 1 kinds of permanent magnetic baried type rotors, is characterized in that possessing:
Rotor core, it is applicable to the radially inner side being configured in fixture;
First imbeds hole, and it is formed in the position of the close outer peripheral face of described rotor core, and extends on the direction orthogonal with d axle;
First permanent magnet, it is embedded in this and first imbeds hole;
Second imbeds hole, and it is formed on described rotor core in the circumferential both sides of described first permanent magnet, and extends along q axle;
Second permanent magnet, it is embedded in this and second imbeds hole;
Space part, it is imbedded between hole and described each second permanent magnet described first and is formed at described rotor core, and this space part comprises: imbed hole continuously and the first space extended towards this second permanent magnet from each end face of circumference of described first permanent magnet with described first; And the Second gap in this first space is left towards described second permanent magnet; And
Strengthen bridge, it is formed between described first space and Second gap,
When the thickness along described d axle of described first permanent magnet is set to T, when beeline from each end face of described first permanent magnet to the forming surface of the described reinforcement bridge in described first space is set to V, described space part is configured to meet (1/3) × T < V≤T
Described Second gap is formed as the magnetic line of force is passed through between described second permanent magnet and described Second gap,
The shape of falling V expanding the interval strengthened between bridge from the radial outside of described rotor core towards radially inner side is formed as at a pair reinforcement bridge of the circumferential both sides of described first permanent magnet,
Described fixture possesses the stator core of ring-type and is arranged in multiple teeth of inner peripheral portion of this stator core,
When extending in the radial direction of described stator core and be set to the central shaft of described tooth by the straight line of the intermediate point on the Width of described tooth, width between the described central shaft of a pair adjacent tooth is set to spacing P, when the distance along described d axle from the outer peripheral face of described rotor core to described magnetic pole strength is set to F, the first permanent magnet configuration becomes to meet (1/10) × P < F < (2/3) × P.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-159584 | 2010-07-14 | ||
| JP2010-159586 | 2010-07-14 | ||
| JP2010159584A JP5621372B2 (en) | 2010-07-14 | 2010-07-14 | Permanent magnet embedded rotor and rotating electric machine |
| JP2010159586A JP5621373B2 (en) | 2010-07-14 | 2010-07-14 | Permanent magnet embedded rotor and rotating electric machine |
| PCT/JP2011/064714 WO2012008295A1 (en) | 2010-07-14 | 2011-06-27 | Rotating element with embedded permanent magnet and rotating electrical machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102986116A CN102986116A (en) | 2013-03-20 |
| CN102986116B true CN102986116B (en) | 2015-11-25 |
Family
ID=45469303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180033938.8A Expired - Fee Related CN102986116B (en) | 2010-07-14 | 2011-06-27 | Permanent magnetic baried type rotor and electric rotating machine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9276443B2 (en) |
| EP (1) | EP2595281B1 (en) |
| CN (1) | CN102986116B (en) |
| WO (1) | WO2012008295A1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5643127B2 (en) | 2011-02-03 | 2014-12-17 | トヨタ自動車株式会社 | Rotating machine rotor |
| DE102013225396A1 (en) * | 2013-12-10 | 2015-06-11 | Bayerische Motoren Werke Aktiengesellschaft | Electric machine with optimized permanent magnet distribution |
| FR3019948B1 (en) | 2014-04-10 | 2017-12-22 | Moteurs Leroy-Somer | ROTOR OF ELECTRIC ROTATING MACHINE. |
| FR3019949B1 (en) * | 2014-04-10 | 2018-01-05 | Moteurs Leroy-Somer | ROTOR OF ELECTRIC ROTATING MACHINE. |
| CN105186741A (en) * | 2014-05-27 | 2015-12-23 | 比亚迪股份有限公司 | Motor rotor and motor therewith |
| JP2018026965A (en) * | 2016-08-10 | 2018-02-15 | 富士電機株式会社 | Rotor and permanent magnet type rotary electric machine |
| WO2018159181A1 (en) * | 2017-02-28 | 2018-09-07 | 日立オートモティブシステムズ株式会社 | Rotating electric machine rotor and rotating electric machine equipped with same |
| CN107219844B (en) * | 2017-06-20 | 2020-03-17 | Tcl空调器(中山)有限公司 | Power module power-on self-test method, device and storage medium |
| CN108429375B (en) * | 2018-05-08 | 2020-06-16 | 珠海格力电器股份有限公司 | Rotor structure, permanent magnet auxiliary synchronous reluctance motor and electric automobile |
| CN109256878B (en) * | 2018-08-07 | 2024-06-14 | 珠海格力电器股份有限公司 | Rotor assembly and permanent magnet motor |
| CN109067044A (en) * | 2018-11-01 | 2018-12-21 | 哈尔滨理工大学 | A kind of rotor structure improving magneto weak magnetism speed expansion performance |
| JP2020078200A (en) * | 2018-11-08 | 2020-05-21 | 本田技研工業株式会社 | Rotary electric machine rotor |
| CN113039701B (en) * | 2018-11-27 | 2024-05-10 | 三菱电机株式会社 | Rotary electric machine |
| US10797546B2 (en) | 2019-01-08 | 2020-10-06 | Borgwarner Inc. | Interior permanent magnet electric machine with flux distributing voids |
| DE102019102540A1 (en) * | 2019-02-01 | 2020-08-06 | Bayerische Motoren Werke Aktiengesellschaft | Embedded magnet arrangement for permanently excited electrical machines |
| CN109951037A (en) * | 2019-04-23 | 2019-06-28 | 山东理工大学 | Electromagnetism and hidden magnetic pole composite excitation driving motor |
| JP6870717B2 (en) * | 2019-10-31 | 2021-05-12 | 株式会社富士通ゼネラル | Rotor and electric motor |
| JP2022011943A (en) * | 2020-06-30 | 2022-01-17 | 日本電産株式会社 | Rotary electric machine |
| CN213661413U (en) * | 2020-09-03 | 2021-07-09 | 瑞声科技（南京）有限公司 | Linear motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1505239A (en) * | 1995-05-31 | 2004-06-16 | ���µ�����ҵ��ʽ���� | Motor with built-in permanent magnets |
| CN1835340A (en) * | 2006-03-30 | 2006-09-20 | 上海大学 | 'V' type builti-in rotor of permanent megnet dynamo |
| CN101421905A (en) * | 2006-04-24 | 2009-04-29 | 富士通将军股份有限公司 | Buried magnet rotor, motor using this rotor, and compressor using this motor |
Family Cites Families (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1219228B (en) * | 1988-04-21 | 1990-05-03 | Antonino Fratta | SYNCHRONOUS RELUCTANCE ELECTRICAL MACHINE EQUIPPED WITH INTRINSIC POWER SUPPLY MEANS |
| US6300703B1 (en) * | 1997-03-13 | 2001-10-09 | Matsushita Electric Industrial Co., Ltd. | Rotor core for reluctance motor |
| US6087751A (en) * | 1997-07-01 | 2000-07-11 | Kabushiki Kaisha Toshiba | Reluctance type rotating machine with permanent magnets |
| JPH11103546A (en) * | 1997-09-29 | 1999-04-13 | Fujitsu General Ltd | Permanent magnet motor |
| JP2000050542A (en) * | 1998-07-23 | 2000-02-18 | Okuma Corp | Reluctance motor |
| JP4363746B2 (en) * | 2000-05-25 | 2009-11-11 | 株式会社東芝 | Permanent magnet type reluctance type rotating electrical machine |
| JP3787756B2 (en) * | 2000-08-29 | 2006-06-21 | 株式会社日立製作所 | Permanent magnet rotating electric machine |
| JP3597821B2 (en) | 2002-01-17 | 2004-12-08 | 株式会社東芝 | Permanent magnet type reluctance type rotating electric machine |
| US6703746B2 (en) * | 2002-03-01 | 2004-03-09 | General Motors Corporation | Interior permanent magnet rotor |
| JP3811426B2 (en) * | 2002-05-15 | 2006-08-23 | 株式会社日立製作所 | Permanent magnet rotating electric machine |
| US6717314B2 (en) * | 2002-08-28 | 2004-04-06 | Emerson Electric Co. | Interior permanent magnet motor for use in washing machines |
| KR20050069055A (en) * | 2003-12-30 | 2005-07-05 | 현대자동차주식회사 | Rotor structure of multi-layer interior permanent magnet motor |
| JP2005341655A (en) * | 2004-05-24 | 2005-12-08 | Denso Corp | Rotor of magnet embedded dynamo-electric machine |
| JP2007074870A (en) * | 2005-09-09 | 2007-03-22 | Toyota Motor Corp | Rotor embedded with permanent magnet and motor embedded with permanent magnet |
| US7504754B2 (en) * | 2005-10-31 | 2009-03-17 | Caterpillar Inc. | Rotor having multiple permanent-magnet pieces in a cavity |
| US7436096B2 (en) * | 2005-10-31 | 2008-10-14 | Caterpillar Inc. | Rotor having permanent magnets and axialy-extending channels |
| US20070159021A1 (en) * | 2005-12-19 | 2007-07-12 | Emerson Electric Co. | Composite magnet structure for rotor |
| US7556082B2 (en) * | 2006-03-29 | 2009-07-07 | Gm Global Technology Operations, Inc. | Interior permanent magnet rotors with multiple properties and methods of making same |
| US8179068B2 (en) * | 2006-07-24 | 2012-05-15 | Kabushiki Kaisha Toshiba | Variable-flux motor drive system |
| JP2008067474A (en) | 2006-09-06 | 2008-03-21 | Mitsui High Tec Inc | Rotor |
| JP5221057B2 (en) * | 2007-05-08 | 2013-06-26 | アイチエレック株式会社 | Permanent magnet rotating machine |
| JP2008306849A (en) * | 2007-06-07 | 2008-12-18 | Toyota Motor Corp | Rotating electrical machine |
| JP5088094B2 (en) * | 2007-10-31 | 2012-12-05 | 株式会社富士通ゼネラル | Magnet-embedded rotor, electric motor using the rotor, and compressor using the electric motor |
| JP4492681B2 (en) * | 2007-11-16 | 2010-06-30 | 株式会社デンソー | Synchronous machine |
| JP2010022147A (en) * | 2008-07-11 | 2010-01-28 | Hitachi Ltd | Sintered magnet motor |
| JP2010034365A (en) * | 2008-07-30 | 2010-02-12 | Hitachi Ltd | Rotating machine with sintered magnet, and method of manufacturing sintered magnet |
| JP5159577B2 (en) * | 2008-11-19 | 2013-03-06 | 株式会社東芝 | Permanent magnet rotating electric machine |
| JP5355055B2 (en) | 2008-11-28 | 2013-11-27 | 株式会社東芝 | Permanent magnet rotating electric machine |
| EP2372885B1 (en) * | 2008-12-15 | 2017-07-05 | Kabushiki Kaisha Toshiba | Permanent magnet type rotary electrical machine |
-
2011
- 2011-06-27 WO PCT/JP2011/064714 patent/WO2012008295A1/en active Application Filing
- 2011-06-27 EP EP11806625.7A patent/EP2595281B1/en not_active Not-in-force
- 2011-06-27 CN CN201180033938.8A patent/CN102986116B/en not_active Expired - Fee Related
- 2011-06-27 US US13/809,048 patent/US9276443B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1505239A (en) * | 1995-05-31 | 2004-06-16 | ���µ�����ҵ��ʽ���� | Motor with built-in permanent magnets |
| CN1835340A (en) * | 2006-03-30 | 2006-09-20 | 上海大学 | 'V' type builti-in rotor of permanent megnet dynamo |
| CN101421905A (en) * | 2006-04-24 | 2009-04-29 | 富士通将军股份有限公司 | Buried magnet rotor, motor using this rotor, and compressor using this motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012008295A1 (en) | 2012-01-19 |
| EP2595281B1 (en) | 2019-01-23 |
| EP2595281A1 (en) | 2013-05-22 |
| US20130113325A1 (en) | 2013-05-09 |
| CN102986116A (en) | 2013-03-20 |
| US9276443B2 (en) | 2016-03-01 |
| EP2595281A4 (en) | 2016-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102986116B (en) | Permanent magnetic baried type rotor and electric rotating machine | |
| KR101076570B1 (en) | Permanent magnet buried type electric motor | |
| JP4591085B2 (en) | Permanent magnet type motor | |
| EP2800243B1 (en) | Rotor or permanent magnet embedded motor, and compressor, blower, and refrigerating/aitr conditioning device using the rotor | |
| US9692264B2 (en) | Rotor of permanent magnet motor having air gaps at permanent magnet end portions | |
| US11038388B2 (en) | Rotor of rotary electric machine | |
| JP5677584B2 (en) | Rotor, compressor and refrigeration air conditioner for embedded permanent magnet motor | |
| JP2012120326A (en) | Interior magnet rotor, motor, and method for assembling motor | |
| JP2014050211A (en) | Permanent magnet rotary electric machine | |
| US10680475B2 (en) | Rotor for rotary electric machine | |
| JP2003092863A (en) | Permanent magnet embedded synchronous motor | |
| JP4855747B2 (en) | Permanent magnet type reluctance rotating electric machine | |
| CN113597725B (en) | Synchronous reluctance motor | |
| JP2017055560A (en) | Permanent magnet type rotary electric machine | |
| JP4080273B2 (en) | Permanent magnet embedded motor | |
| JP2015233368A (en) | Permanent magnet type motor | |
| JP5621372B2 (en) | Permanent magnet embedded rotor and rotating electric machine | |
| JP5959616B2 (en) | Rotor, compressor and refrigeration air conditioner for embedded permanent magnet motor | |
| JP5621373B2 (en) | Permanent magnet embedded rotor and rotating electric machine | |
| JP6012046B2 (en) | Brushless motor | |
| CN104600937B (en) | Synchronous magnetic resistance motor | |
| JP2015186354A (en) | permanent magnet motor | |
| JP2021191144A (en) | motor | |
| JP2015186353A (en) | permanent magnet motor | |
| JP2016092974A (en) | Rotor structure of ipm motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20190627 |